[vr] Clicking on the security icon should prompt the user to bail out of VR

chrome/browser/android/vr_shell/ui_scene.cc

Index: chrome/browser/android/vr_shell/ui_scene.cc
diff --git a/chrome/browser/android/vr_shell/ui_scene.cc b/chrome/browser/android/vr_shell/ui_scene.cc
index 95510d065ceaf252c587adbfb767042ccb718a75..bd2a978a69722d2fd39ff1de7ac6ee7018d105d2 100644
--- a/chrome/browser/android/vr_shell/ui_scene.cc
+++ b/chrome/browser/android/vr_shell/ui_scene.cc
@@ -212,6 +212,10 @@ void UiScene::set_is_exiting() {
   is_exiting_ = true;
 }
 
+void UiScene::set_is_prompting_to_exit(bool prompting) {
+  is_prompting_to_exit_ = prompting;
+}
+
 const std::vector<std::unique_ptr<UiElement>>& UiScene::GetUiElements() const {
   return ui_elements_;
 }